Cognomen Pratumyam (Pratumyam 
) , all over the world, is a very rare last name. The last name Pratumyam is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pratumyam | Thailand |
Satjaporn, Chottiphon, Patcharee, and Kamolchanok